From owner-freebsd-net@FreeBSD.ORG Tue Aug 12 02:41:43 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EB3711065679 for ; Tue, 12 Aug 2008 02:41:43 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: from rv-out-0506.google.com (rv-out-0506.google.com [209.85.198.234]) by mx1.freebsd.org (Postfix) with ESMTP id B0ACF8FC13 for ; Tue, 12 Aug 2008 02:41:43 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: by rv-out-0506.google.com with SMTP id b25so3780538rvf.43 for ; Mon, 11 Aug 2008 19:41:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:received:received:date:from :to:cc:subject:message-id:reply-to:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; bh=cLTDnikmhL6gnovjFvcrMRj82JBAgRZRgoG+CtOrlj8=; b=R8AiV2hDXyxAdMq1X3bak6Ojm1q8PxeX25WLmpcKPNx/t9gPiUoJ9LEECL8/uEEvyA uIMFHFQWroeMMBwrTl0nr0HRDvBKZg7pYp0DTKZmrnK3Vzh9p48qprh4gpQzhHUXhVep hYPv6WsqQ+JcspHMy7GqWzqlpXDvPbBJx3W0o= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:reply-to:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=tffN/cTIVYWt447/pzIsmlEO76VS9+ZEoTy3yfNknmmdj3mr8axxmHhxcLH9Qb7Ap2 LALAZC4urGbJzOIU4IJXMkMd9dnGE/NNbM5FyHR8dOXqki5C2x8eWnnhFewCSrRckm/y kr+U5/8jkjVYP4fBGk3p56E5ADgTbCNxttO+Y= Received: by 10.140.207.2 with SMTP id e2mr3994985rvg.187.1218508903496; Mon, 11 Aug 2008 19:41:43 -0700 (PDT) Received: from michelle.cdnetworks.co.kr ( [211.53.35.84]) by mx.google.com with ESMTPS id b8sm6491134rvf.8.2008.08.11.19.41.41 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 11 Aug 2008 19:41:42 -0700 (PDT) Received: from michelle.cdnetworks.co.kr (localhost.cdnetworks.co.kr [127.0.0.1]) by michelle.cdnetworks.co.kr (8.13.5/8.13.5) with ESMTP id m7C2dW8c054968 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 12 Aug 2008 11:39:32 +0900 (KST) (envelope-from pyunyh@gmail.com) Received: (from yongari@localhost) by michelle.cdnetworks.co.kr (8.13.5/8.13.5/Submit) id m7C2dScK054967; Tue, 12 Aug 2008 11:39:28 +0900 (KST) (envelope-from pyunyh@gmail.com) Date: Tue, 12 Aug 2008 11:39:28 +0900 From: Pyun YongHyeon To: Andrew Snow Message-ID: <20080812023928.GE54362@cdnetworks.co.kr> References: <20080811021703.GC50045@cdnetworks.co.kr> <48A0BE14.6070102@modulus.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48A0BE14.6070102@modulus.org> User-Agent: Mutt/1.4.2.1i Cc: "freebsd-net >> FreeBSD Net" Subject: Re: Rx/tx hardware checksumming statistics? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: pyunyh@gmail.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Aug 2008 02:41:44 -0000 On Tue, Aug 12, 2008 at 08:32:52AM +1000, Andrew Snow wrote: > > Are there any NIC hardware counters that FreeBSD could be taking > advantage of or displaying? > It depends on device driver. Some drivers access hardware counters maintained by MAC and can display these counters with sysctl(8). In addition these counters are used to update statistics counters in ifnet which can be checked with netstat(1). For example, em(4), age(4), sf(4), bge(4), bce(4) provide sysctl interface. -- Regards, Pyun YongHyeon